Using the Circle Technique. 1  1. Place the shoes on a flat surface. 2  2. Tie a basic knot. 3  3. Tie another knot, but donât tighten it.  4. Thread one shoelace into the 1  circle. 5. Thread the other shoelace into the circle.  6. Pull the bunny ears tight.
The caffeine in coffee can also contribute to stomach pain through several different means. Caffeine stimulates the central nervous system, which can cause the stomach to produce excess stomach acid. This excess stomach acid can contribute to gastritis or ulcer formation.
Coffee creates acids that can cause an upset stomach, especially if the stomach is otherwise empty. When the caffeine in coffee causes your heart rate to increase, it can lead to nausea. People with acid reflux or other gastrointestinal problems may want to drink coffee that has less acidity.